Possible reasons for testicular prolapse in men: First, orchitis or epididymitis, there will be obvious swelling of testicle or swelling of epididymis, and both of them are tightly adhered and not easy to be separated, and then there will be testicular prolapse, accompanied by localized pain and localized dropping sensation, which needs routine blood test and ultrasound examination of the scrotum to confirm the diagnosis. Secondly, varicocele, the testicles on the varicocele side may droop, and the blood vessels in the scrotum can be seen to be tortuous, and when touching with the hand, one can feel the varicocele in the form of mass, accompanied by testicular swelling, pain, etc. Usually, it can be relieved after lying down, but it can be relieved after lying down. Usually, it can be relieved after lying down, but it can be more obvious after standing upright or long-term weight-bearing labor. Thirdly, testicular tumor can appear testicular prolapse on the diseased side, accompanied by drooping sensation and pain of testicle, the testicle volume increases in appearance, hard texture when touching with hands, such as the feeling of touching the stone, accompanied by slight pain, need to carry out the CT examination of testicle to confirm the diagnosis.